Turn on the flashlight: Press and hold the switch for 2 seconds. Replace gear: Press the switch. (HIGH-MID-LOW-SOS) Flash position: Double click the switch. Turn off the flashlight: Click the switch after eight seconds in any gear position / or click the switch in the SOS gear) Charging: The product has a power indicator. Use usb to charge to the battery level and display 4 indicators. Use the 18650 battery: use a 18650 converter to extend the flashlight and then install the 18650 battery. Note: The product is waterproof. Please do not disassemble the flashlight. This leads to a decrease in water repellency.
Basic product parameters: